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W. KAISUNG.

CALLING DEVICE.

APPLlcATloN FILED DEC. 30. i911.

Patented Aug. 22, 1916.

2 SHEETS-SHEET l.

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W. KAlSLlNG. CALLING DEVICE. APPLICATION m2o nic. 30, 19H

1,1 95,589. Patented Aug. 22,1916.

2 SHEETS-SHEET 2.

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7. mL/Enyzf siding in Chicago,

Unir-no s'iarss raisn'rf onlinenit WILLIAM KAISLING, or CHICAG,

AND SUPPLY COMPANY, OF CHICAGO, ILLINOIS, .A CORPORATION OFV ILLIQIS.v

` CALLING DEVICE.

ratentecaug. 2e; irate..

` Application led December, 1911. Serial No. 668,734.

To all whom z 'zmay concer/n.' y I Be it known that I,- `WiLLiAM KAIsiiiNe, a citizen ofthe United States of Ameriea,re county of Cook, State of Illinois, have inVenedcerta-innew and useful Improvements in Calling Devices, of which the following. is a specification.

My invention Yrelates `to callingdevices,l

lor impulse transmittersl as they are aiso called, in general and more'particularly to that type of device used in connection with so-called two- Wire metallic line telephone Asystems in which directively controlled se lector switches Aare operated responsive to interruptions of 'a metallic line circuit.

. An object of my invention-,is to provide a `vcalling device of the. class referred to which `kissimpleot construction, easy ofmanipulaion and'positive in operation.

ence characters indicate like parts and in' i There are' certain features 1of my invention `Which will be more particularly pointed Iout in the specification and claims.`

For a more complete understanding of my invention, ,reference is to be made to the accompanying drawings in which like referwhich,

Figure 1 is a face view of my device with a portion broken away to show the indicating-dial advancing gears. Fig. 2 is a rear view of my device with a portion of the escapement wheel broken away to more clearly show the cooperation between the impulse springs and their actuating members. Fig. 3 is an end view of Fig. 2 partly in section along the line 3-3 of Fig. 2`looking in the direction of the arrow indicated thereon.

Fig. 4 is a bottom view ot Fig. 2. Fig. 5 is a top view of Fig. 2 with "someopthe' parts shown in section valong the line' 5-'5'-of Fig. 2, looking in the direction of the arrow indicated thereon. Fig. 6 is -a. rear .sectional view of the device along line 6-.6 of Fig. 3,

looking in direction of arrow indicated thereon. Fig. Z is an end view of the device, similar to Fig. 3, but with the settingmember A in an opposite position, and illustrating only someof the parts, Fig. 8 'is a view similar to Fig. 7, bu with the actuating member A partly depressed. Fig. 9 is a view similar to Fig. 8, but with the actuating member fully depressed and locked. Fig. 10 illustrates the motor mechanism unit carried on-the main shaft. Fig. 11 is a perspective disassociated view oftheii'iainsha? and some of the part-s carried' thereby. Fig.y 12 is a perspective disassoci'ated; view of a portion of the malin shait and a. latehi'ngand stop finger carried thereby. Fig. 13 ill'us. trates in perspective a. Locking plate which 'Kcoperates with the atching fi'nger'u on the main shaft, for yoldiligthe settingjm ber A in its'fuilygdepressed position while l ing diierent arts of the apparatus. Fig.

17 illustrates t ie central portion of thefront plate 1 of the main frame, showing particularly the arrangement of normalstop openings. Figs. -18`, 19, and 20 show a. normal,

oli normal, vand depressed operative relation respectively,gbetween the,latching and stopfinger, and toothed member 33; Fig. 21

illustrates diagrammatically a wel1 knownv substation telephone circuit with thecalling device of my inveptionlconnected incircuit thereof.v

In the preferred form of my invention, as

illustrated, my device is adaptedfor transmitting any number of impulses from 1 to 10. Assuming that five impulses for instance are to be transmitted, the operation of/tlie device generallyspeaking is as follows: Setting member is rota-ted in a clockwise direction until -it is opposite the indicating numeral 5 and itY isv then depressed tothe position shown in Figs 9. kMotor and irn. pulse mechanism is ad]usted responsive tov the rotation of the setting member', which upon being depressed, the adjusted impulse mechanism is released to operate, effecting y tive operations of the impulse springs. During the operation ofthe mechanism for transmitting the impulses, the setting member A is locked in its depressed position until the impulse mechanism has operated, whereby the said setting member yis auto matically released from its locked position, whereby it is available to be operated for transmitting another series of impulses.

Referring now more particuia-riy to the 'construction of the device, it comprises a front plate 1 and a bridge plate 2 rigidly yconnected by studs 3, stand 5 suitably staked to plate 1, and secured to plate 2 by ineens of screws 6, 7 and 8. Secured to the iront of plate 1 is a hollow tace .ilate 9, having a plurality of penings 10 therein, preferably eleven in number as indicated in Fig. 1, rep resenting ten operating and a normal position. Each opening 10 has a transparent plate 11, such as glass or Celluloid, suitably secured therein. Secured to the rear of plate 2 is a bracket bearing 12, being preferably secured by means of the screw 7 and doiveled by pin 13 which passes through bot-h plates 12 and 2.

Snitably supported in the center of the device is a. main shaft 14 preferably journaled at one end in the bearing 15 of bracket 12.

Fig. 10 shows a unit, mechanism C, including a geared spring barrel -B loose upon a shaft 14, the said `barrel comprising a hollovved gear member 16 containing` a spring 17 secured at its inner end to a pin 18 carried by shaft la, and at its outer end to the barrel 16. A cap 19 is secured to the barrel 16 by means of screws 20, 21 for holding spring 17 in place. A sleeve loosely fitted to shaft. 14, being slightly larger in diameter than the'portion 1st"A of shaft 111- so that spring barrel B rests between the shoulder caused by .sleeve 22 and the shoulder 142 of sha-ft 14, and free to rotate on shaft 14, lateral movement thereof being prevented due to the supporting shoulders referred to. rlhe slotted end 22 of sleeve 22 lits over projections integral with shaft 14 so that there is no relative rotary motion between the two members 14 and 22. Main shaft 14 alsol carries, preferably integral therewith, a ring flange 143, more clearly shown in Fig.l l2, carrying a coiled spring 23 shown in section in Fig. 10. A latch and stop member 24 is loosel)7 supported upon the portion 144 of shaft 14, beingr so mounted that it is free to be rotat-ably reciprocated thereon, its movement beingr limited by the play ot lugr 24 in slot- 145, this beingr indicated in Figs. 18, 19, 2G. To hold member 24 in place upon shaft 14, a collar 25 is provided, being secured to shaft 14 preferably by means ot a pin 2G, SpringT 23 is secured at one end to the slot 14 and at its other end in the hole 242.

Spring 417 which is the main operating or o1' a lever or arm 28 'metisse i its shaft in direction opposite to the tendency of spring barrel B, spring 17 being greater tension ozerconies spring 23, thus cting upon member 24' whereby the surface ai' lug 2l 'is' pressed against surface 147.' Thus it will be seen that the meehanisn'i shown in Fig. 10 comprises a unit, so assembled that the parts are all held in a normal position, which is as illustrated.

In operating the device it is preferably so arranged that the operating spring 17 is to be wound up according to the extent of operation of a setting member, each time the device is to be operated. Therefore, secure a setting member A to main shaft. 14, said member A preferably beingr in the form carrying a lrnob or handle. 29 rotatably secured to said arm 28 by means of a stud and screwv 31, as illus trated more clearly in Fig. 5. A pair of ears 28 are suitably staked to arin 28 and adapted to lit in slots 222 of sleeve 22, this construction being shown in Fig. 11. A nutY 282 is also provided to. thread on to the tl'ireli'ded end of shaft 14 after the arm 28 is inv place, thus holding the lsetting member A securely to shaft 14 so that'when member A vis rotated shaft 14 is carried around thereby. v

The unit mechanism C illustrated in Fig. 11'.) supported by its shattla at one end in, bracket 12 While itssleeve 22 is -jruirnaled in the central bearing of fa ce plate 9. Shaft 14 and its mechanism, tlat the unit off Fin'. 10, is adapted also to'be longitudinally movaliile in its bearing, vits normal position beiney shown in Fig'. 7 while its deqiressed position is illustrated in Fig. 9. Mechanism C is held in a normal position with. a face of member 16 against the surface of front plate 1, a leaf spring 66 being provided to. hold itin such normal position. VSaid spring 66 is secured to plate 2 preferably by means of screws 67, it. having a bifurcated end partly-encircling sha-tt 14 and resting against the shoulder of collar 25, so that when member A is depressed it moves against the tension of said spring 66.

YSetting member A is adapted to be locked against actuation when in its depressed position and for this purpose l provide lockingv means preferably in the form of a small projecting pin 30" which is an extension ot stud 30. l also provide a series of coperating locking and guiding holes 32, one for cach operating position of setting member il. il/Thenmember A is rotated to any operating* position. pin 30 enters the associated lockingy hole 32 as member A is depressed. gering barrel B 'adapted to rest in any one of a pluralityy of'normal positions, there being eleven such positions, and in order to hold barrel B against rotation in any of its positions, a. pin 21", preferably an extension n? screw 21, is provided, adaptedto copermesses ate with a series of stops, preferably in tl e form of holes l" in face plate 1, which are a clockwise direction, rotating shaft 14- oq course and the linger 244 wiich is carried thereby, and also winding 'motor spring 1T. When member A reaches any of its operating positions with pin above an opening 32,. setting member A` may then be depressed to the position illustrated in F ig. 9. lt will he noted that as shaft 14 mores inwardly carrying barrel B, pin 2l moves out ofjt-s cooperating opening l and pin 30 moves into its cooperating opening 32, and soon as the pin 2l. is clear of' plate i it will be seen that spring-17 will rotate barre l?) on its bearing until the stop pin 27 carried thereby catches u to and engages finger 2li* automatically re easing shaft ift. which is again moved outwardly, due to the action of spring 66, pin 21' moving into another opening l'. From this it will be seen that each time setting member A is advanced to another o erating position and then de pre/seed to re. ease the wound-up spring, barrel B advances to another position according to adjustment of setting member A. j

When setting member A has been fully operated, that is, rotated and then depressed to release the adjusted mechanism, it is locked in such an operated position, iiot'only against rotation, butalso in its depressed position.- To this end l providea locking member preferably in the iorm ot a toothed @disk 33 illustrated in Fig. 13, having plurality of engaging members 33 adapt-edt() cooperate with fingeri 24* when member A is depressed in any of its operated posi- .tions The said locking disk 33 is scoured to plate 2 by means of a pair of screws passing through slotted openings i3d-37 in plate These slottedopenings 4536-37 allow rotary adjustment yoi' disk 3231 so that its teeth 33 may be brought into correct operative relation withfinger 244.*

Themanner of operating the setting member A to adjust and release the motor mechanism was just described andlrghe cooperation between teeth l33 and linger L24* for locking the setting member in its depressed position will now be described.

Fig. 18 shows the relative position oi fiuger`1 and a tooth 33' when member A is in a normal position. As member A is rotated `in starting a setting operation, spring 223 acts upon member l to rotate it on its bearing until the lug 2l moves to its alternate position in slot H5 as indicated in Fig. i9.

W ith the member A. in one of its operating positions, finger 2l* is in a position with relation to a tooth 33' as illustrated in 19. Therefore` when the setting member G5 depressed, the beveled end of linger Eril* ein ages a beveled surface of a tooth 33. .`hen is the inward movement of shaft 14 is c0ntinned finger 24* is rotated on its bearing against the tension of spring 23, due to its sliding engagement with a beveled face 0f the tooth 33, and upon the setting member reimhing its fully depressed position, which is as indicated in liig. 9, finger '244 snaps back under the associated tooth 33 into a position as illustrated in Fig. 20. It will be seen that due to linger 2&4 snapping back beneath a tooth 33', that the setting member is locked in its depressed position until linger 24,4 is again released. As previously stated when the setting member is depressed after being rotated to one of its operating positions, the spring barrel B is released as pin 21 clears plate 1, but to insure against releasing spring barrel B before the setting member A is locked in its depressed position, finger 244 is so related with respect to the underside of teeth 33 that it snaps back into a locking position substantially at the same time that pin 2l clears plate l.

To release the setting member from its fully depressed position, which means that .linger 24* must be moved out of locking en gagement with its associated tooth 33', the advancement of barrel B after being' re leased, causes pin 27 to advance into engagement with finger 244, whereby the continued forward movement of pin 27 moves finger .24* .into a position as illustrated in Fig. 18

where it is clear of tooth 33, allowing spring GG lo restore the setting member to a normal position, whereit may be again op erateiil.

F rom the previous description, it will be understood that the rotation or operation of spring barrel B is according to the adjustment of the setting member A, that is, it setting member A. is moved from normal to a fifth operating position., it means that tated over a space oi one operating position,

shaft 38 makes one hall revolution. A pair ot' wings fil--lzl :are provided yfor shaft 38, they being adapted to Cooperate with the impulse springs as will be. more fully re.- ferred to,

A preferred arrangement oitx impulseY sp rings is shown, comprising contact springs 43 i4, normally in Contact. Said springs are insnlatingly mounted on a bracket i5 which is secured to plate i. Contact spring lows the setting member and motor meeha- 42 passes roller 46.-" `Thei"efo're if in operating-the calling fdevice the motor meenal nism is'advancedrover e space of 've onerating positions-3 it folloivs that shaft 3S reeeives two and Onelialf revolutions wherebyv In the prei'fious'deseription have referred tothev setting member A and motor interrupt Contact springs mechanism lasV always partaking of a forwardv'motion and as' this'results in the setting member A assuming a dilerent normal lposition eeelitime it*V is opera-ted, I provide an vadvancing indieatingd-inl D .Whicli folnism, so that after each-operation of the 'calling device, the indicating dial'is in a definitev relation to l.the 'issetting member'A, tl'iat'is'the relation' between the indicatingr numerals and settinginember Aafter each' operation is-as is shoWn'in'Fig. A1. This indicatingdeviee D comprises'a numbered plate 47 numbered as indicated in Fig. 1 andtseeurely lclamped 'betWeen-- tivo `disks 748-49 which ai'erigidly secured "to a hub 50 whiclris rotatably mounted upon sleeve 22,- tliis being more'clea-rly shown in Fig. 3.

lThe Vdisk 49 is also preferably arrangedas a gear having thev samenumber- 'of 'teeth as sprin'gbarrel gear 16, the teeth (1i-'gear .49 j being in mesh with ,a pinionil carried by sli-aft 38 'y This-pinion 51 has the.

same number of teeth' :is pinion 40 also carried by shaft 38, and is preferably integral with said shaft 38. 'Upon reference to Fig. v5 it will benoted that a .portion of. shaft 3S between pinions 51 `and 40 aets 'as :i bearing,

`being journaledin a split collar 52, slightly larger in diameter than pinions '40 .and 51 and' adapted A to-` be pressedinto av holeot plate 1. Due to theA fact that gears 16 and 49 have-tliedsame iiumber-ofteeth and pinions l40 and 51 the seme number Yot' teeth,

' and as gear 16 advances according to the advancement of member'l, it follmvsltlizit the indicating dial D advzinces correspondling to the advance of the setting member A each time the calling device is operated- In impulse transmitters oi'ycalling devices of the present type, it is essential that-*the impulse mechanisms operate predetermined speed so that the impulses ere transmitted at substantially av :definite rate. Therefore, I provide governor means pieterably "in the forni ot" escapement ineelianism E eoniprising an eseapement wheel 54 rigidly secured in a suitablenianner to shaft. 3S. Coperating with the said wheel n pallet 55 Vsuitably 'fastened to :i shaft which is pivotally supported in braclietland plate 1. An adjustable weighted member 57 is also secured t0 a shaft 56 preferably ineens of a collar 58 and set screw' By means of this governor mechanism it is apparent that when the motor mechanism is wound up and thereafter released for operation its movement Will'be retarded v:whereby the impulses: may be effected at a rate determined by the adjustment'of the member 57.

l lll/'hen using a'celling ldevice .the-"press en t type with a substation telephonefl provide means whereby the substation appa-- ratus may be shunted'during the-transmission of impulses, thereby 4euttingdow'n the substation resistance and'causing more positive operation of the mechanism operated responsiveto such impulses. end I provide a pair of normally open contact springs SO, (S1 insulating'ly mounted von plate 2 by means of screws, 67. These springs cooperate with an' insulation button .62 carried by leaf spring '66 in such a manner that when the actuating member A is fully depressed as' shown in Fig. 9, said siiunt springs 60, 61 have theiroontacts closed, and as previously stated setting member A being locked in en oper'ated posi-` tion while theimpulses are being trans-v mitted, it

known elen'ients and 'circuit arrangements and it is believed any further 'referenceA thereto is unnecessary.v In the diagrnm, im'- pulse springs L1B-4A are shown' connected -in series with the direc-t current path throughv .the telephone whereby*Whemthefreeeiver is removed from its switch-hook, said springs 43,114 are connected inseries with the line conductors 64, 65,. Shunt springs G0, 61 are connected in'shunt with the telephone appevi-:itus whereby when they are elosedthetelecircuit. y

Operationz-Having described the construction and cooperation between some of 'lhe telephone itselff-.eomprises ivellV phone apparatus is shunted out of the line folloivs that shunt springsvl), 61 l remain in Contact `until setting member-A is lll) the elements of my callin-gdeviee its operetion in transn'iitting a series of impulses, or-

. of interruptions of itsi'mbrings, .vill non' bev described.

ming. the operator desires t0 ellectsix iiiterrzilnioii's of impulse springs 43, 4e, iand thet'the devieeis in'a position 'as illustrated, i'

by nie-ans of handle 25), the setting member A is rotated until itgis in a position above the indicating numeral G. eration of inenilei A rotates its shalt 14 n'i'iereby the spring 17 is wound accordingly. Due te the engagement between pin 21 of spring barrel B and its cooperating holding step l spring barrel B remains vstationary ribis settinfr` op-v matassa.

during the rotary movement of setting member A. At the beginning of the said setting movement, collar 143 being secured to shaftv14 rotates in the direction of the arrow indicated thereon (Figs. 18, 19), thus allowing spring 23 to act upon member 24 rotating it slightly on its pivot until the lug 24 stops in its alternate position in slot 145 as indicated in Fig. 19. The continued setting movement of member A until it reaches a sixth operating position brings finger 24A1 into a position relative to a tooth 33 as indicated in Fig. 19, but, of course, it is to be understood that iinger 244 is six positions in advance of stop 27 instead of one position as shown in Fig. 19. This setting movement of member A as described, as will be seen, effects an adjustmentof the motor mechanism whereby when it is subsequently released it will respond to cause a travel of the impulse mechanism corresponding to the adjustment of the setting member, in this case over six' positions. The operator now depresses member A moving it inwardly so that pin 30 enters guide and locking hole 32, in the present instance it being the hole 32 associated with indicating numeral 6 in Fig. 1. As shaft 14 moves inwardly carrying spring barrel B therewith, pin 21 is moving out of its associated opening 1. The inward movement of shaft 14 also causes iinger 24'* by its beveled surface adjacent to an associated tooth 33', to ride over thel said. tooth 33 rotating slightly' against the tension of spring 23 until shaft 14 has moyed inwardly far enough for iinger 244 to. clear the inner surface of the engaged tooth 33. n Figs. 7 and 8 the end of finger 24* is shown in black shading to more clearly indicate its position, Fig. 7 being at normal and Fig'. 8 in an intermediate position. As ringer 244 clears the associ- .ated tooth 33', it snaps back beneath said tooth to the position indicated in Fig. 20, whereby the setting member is held. in its depressed position, which is as indicated in Fig. 9. Simultaneously with this snapping back or locking movement of finger 24, or substantially so, pin 21 of spring barrel B clears plate 1 as indicated in Fig. 9, whereby the motor mechanism is free to act upon the impulse mechanism. -Also as the shaft 14 reaches its fully depressed position, shunt springsxGO, 61 are closed as indicated in Fig. 9. The release of pin 21 from its holding stop 1 allows spring 17 to act upon driving .gear 16,'rotating it about shaft 14 in the di- Irection of the arrow indicated thereon, and

as finger 24'1 was advanced operating per 'tlie motor mechanism advanced through six operating positions corresponding to the advancement of setting member A, therefore dial D is caused to advance over a 'distance lot six operating positions bringing its normal point around to the opening beneath which, in Fig. 1, the indicating numeral 6 is shown. This opera-tion of dial D is brought about through the connection existing between gears 49 and 16 with the rigidly connected pinions 51-40. In other words, gears 1G, 49 having the same number of teeth and pinions 40---51 having the same. number of teeth, it will be. seen that as driving gear 16 is rotated that gear 49 and dial D, have the same arcuate travel as gear 16.

I have referred to the operation of the impulse mechanism caused by the advancing of gear 16 through six operating positions,` but just as.it is completing its travel the unlatching operation of finger 24'* from tooth 33 takes place, this being brought about as follows: U pon pin 27 which is carried by gear 16, advancing into engagement with ringer 244, which is just before the completion of its forward movement, vitcarries finger 24 along with it rotating member 24 on its pivot until its lug 24 again engages the stop 147 as indicated in Fig. 18, stopping the forward movement of gear 16. The disk 33 is so adjusted with relation to finger 24" that upon member 24 being brought into the position as indicated in Fig. 1S linger 244 is clear of tooth 33 whereby leaf spring 66 is free to restore setting member A to normal. As shaft 14 moves outward the pin 21 carried by barrel B enters a holding opening 1". Also due to the restoration of. shaft 14 shunt springs Gti-.61 have their contact interrupted whereby the shunt is removed from about the substation apparatus, when the calling device is connected as shown in if" r. 2i.

From the prcvibus description., it will be seen that if the setting member A is in a pr tierras indicated in i and it is then moved to the operating position indicated by the numeral i3 and depressed7 the impulse mechanism is ti'iereby operated to cause six operations of the impulse springs also caussitions ahead of stop pin 27, the said rota-Qing indicatingl dial D to advance through a tion of gear 1.6 is continued until pin 27 is again in stopping engagement with fingerV 244v as will be more deiinitely described. Gear 16 in rotating through the six operating positions as stated, causes shaft 3S to distance. of six operating positions, bringing it into the same reiation with actuating member A as indicated in Fig. 1, out advanced six positions. To operate the galling device again the setting member A. is again ioA rotated4 to the indicating numeral correspending with the number of impulse spring operations desired and is then depresse-dto release the impulse mechanism 'for operation as before, whereby dial D is again advanced according tothe advancement of thesetting member.

With tliecalling device atnormal thesetting and starting member A may 'be depressed without first rotating it, but it `is apparent that suoli an operation of member A-simply .moves-v mechanism C inwardly.

. closing shunt spring-s60, 61, but --as the motor mechanism has not been Wound, it will ,Y

7 l be seen that upon tueoperator releasingV his hold upon member A, said member is simply restored, 'that is again moved outwardly by the action of: lea-I' spring 66, Gr

should the operator rotate member A and then release hisliold thereupon without de pressing it, although spring 17 was wound by such an operation, it is apparentvtha't if member A is not depressed it simply snaps back to the normal point romvwhich it was moved Without eecting an operationl of the impulse mechanism. From this it will be seen that in order to cause an operation? of the impulse mechanism, member A must be .rotated to adjust .the .mechanisnn and then depressed to release it from such ad- 'justment for operation. l

5 In worlringout myinveiition but I do' notde'sire to be limited toitliestrucA4 ture as disclosed as it is apparent-that many changes and modifications thereof may be made Without departing fromthe spiritv and scope vof the appendedclaims.

That I claim as nei-v and desire to secure by Lettersv latent of the United States ist 3: A calling device comprising impulse mechanism, a setting member adapted to be moved to plurality of operating positions 'for adjusting said mechanism, an indicating 'dial for said member, and mechanism for advancing said dial each time the callingl .device is operated, 'according te the actua- Iihave pref- .erably arrangedit 1n a most compact form to more readily adapt it for commercial use,

.2. A callin device "includinff a settin r Y h h tion of said setting member and causing it to rem in. in such advanced position until the next operation o the device. l

el. A calling device comprising impulse' mechanism, a setting member adapted to be moved to a plurality of operating positions for adjusting said mechanism accordingly, an indicating dial for said member, and means connecting said diall and mech.- anisrn whereby said dial is advanced each tiinethe calling device is operated, according to the actuation of said setting member and causing it to remain in such advanced position until the next operation of the de-` vice. Y'

5. A calling device comprising impulsemechanism having different'degrees of actu ation, a setting member having a plurality of operating positions corresponding to the diilerent degrees of actuation of the impulse inechaiiism for adjusting said vmechanism,-

Il 1V an indicating dial ror said member, ano means Jfor -advancing said dial each time said mechanism is operated, accordingto theactuation of. said setting member andcausiiig it to remain in such advanced po-V sition until the next operation ofthe-device.

6. A calling device comprising, impulse mechanism, va. rotatable,*setting member adapted to be moved to a plurality of oper.-v

`9'5 atingv positions for4 adjusting s'aidniechanisniaccordingly,ineans Vfor"thereafter oper.-

atingsaid mechanism, a rotatable indicating dial'for saidsettinginembe'r, and'means for: A

advancingsaid'dial each time' the "callingdev fice' is operated, according to' the 'actua'v tion of the setting member.`.; Y

7. Al calling.. devicercompri'sing impulse' mechanism, a set-ting'.memberl adapted to be moved to a plurality' otoperating positions* for adjusting said mechanism, an indicating i dial for said member, means for operating said mechanism according to-the adjusting movement of said setting member, land 'means operatii-'ely connecting said dial and.i .mechanism forv advancing said dialeach time said mechanism is operated, according to the actuation of the 'setting member.

8. A calling device coiiipr'is'ing' impulse mechanism having dilerentv degrees'oiroperation, a setting member-having a plurality of operating positions correspondi'i-igto thev degrees of operation of the impulse mecha! msm for adjusting said mechanism, anindicatiiig dial lor said member, means for opeiating said 'impulse mechanism according to the adjusting movement of saidsetting member, said indicating dialbcing responsive to s aid impulse mechanism whenopere ating, whereby.7 it. iadvanced according to the adjusting operation of the setting meine' ber.

9. A calling device comprising impulse mec'iianism, a manually operated .setting member a'dapted to be moved to a plurality of operating positions for adjusting said impulse mechanism accordingly, and means responsive to a subsequent manual operation of said setting member While in its operated position for releasing said mechanism from its adjustment for operation.

10. A calling device comprising impulse mechanism, a manually operated setting member therefor' normally at rest, means responsive to two separate and distinct offnormal manual movements of said member for first adjusting said mechanism and there- -after releasing it for operation, and means whereby said member may thereafter be restored to a normal position.

11. A calling device comprising impulse mechanism, a. manually oper: ted setting member therefor normally at rest, means responsive to off-normal operations of said member for lirst adjusting said mechanism and thereafter releasing it for operation, and means whereby said member may there-- after be restored to a normal position.

12. A. calling device comprising impulse mechanism, a manually operated setting member therefor normally at rest, means responsive to off-normal operations of said member for first adjusting said mechanism and thereafter releasing it for operation,

'and means for locking said member in its operated position against further actuation while said impulse mechanism is operating.

13. A calling device comprising impulse mechanism having a plurality of operating positions, a manually operated setting member for adjusting said mechanism to any of its positions, means responsive to a subsequent off-normal manual operation of said setting member for releasing said mechanism from its adjustment for operation, and means for locking said setting member in its operated position against furthe* actuation while said impulse mechanism is operating.

14. A calling device comprising a rotatable setting member adapted to be advanced to a plurality of operating positions, a rotatable numbered indicating dial for the setting member, and mechanism responsive to1 motor mechanism for advancing said dial according to the operation of the setting member'.

1G. A calling device comprising impulse mechanism, a manually operated setting member primarily adjustable for sett-ing said mechanism, and means responsive to a subsequent transverse movement of said member for releasing the mechanism from its adjustment for operation.

17. A calling device comprising impulse mechanism, a manually operated rotatable setting member primarily adjusted for setting said mechanism, and means responsive to a subsequent transverse manual movement of said member for releasing the mechanism from its adjustment for operation.

1S. A calling device including impulse mechanism provided with a plurality of operative positions, a` setting member for adjusting said mechanism to any of its ditlerent positions, means controlled by the setting member for releasing said setting mechanism for operation vvhen adjusted to any of its operative positions, and means for preventing the operation of said mechanism when adjusted to an intermediate position.

19. A calling device comprising impulse mechanism provided with a plurality of operative positions, a setting member for adjusting said mechanism to any one of its positions, means for releasing said mechanism for operation when adjusted to any one of its operative positions by a subsequent oper ation of the setting member', and means to prevent the operation of the said mechanism when adjusted to an intermediate position.

Q0. A calling device including an impulse mechanism provided With a plurality of operative positions, a setting member for adjusting said mechanism to any of its positions, means for releasing said lnechanism for operation when adjusted to any of its operative positions. and means for preventing the operation of said member to release said mechanism when said member is adjusted to an intermediate position.

Signed by me at Chicago, county of Cook, and State of Illinois, in the presence of two witnesses.

WILLIAM KAISLING.

Titnesses (hionen E. MUELLER, Canam li. ANnnRsoN. 

